LTC3534 查看數據表（PDF） - Linear Technology

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LTC3534

7V, 500mA Synchronous Buck-Boost DC/DC Converter

Linear Technology 

LTC3534

Typical Performance Characteristics TA = 25°C, unless otherwise noted.

VOUT Ripple at 300mA Load

Load Transient Response in Fixed

Frequency Mode, No-Load to

300mA

VIN = 5V

VIN = 3.6V

VIN = 6.4V

1µs/DIV

VOUT = 5V, AC-COUPLED

20mV/DIV

COUT = 22µF

ILOAD = 300mA

3534 G17

VOUT = 100mV/DIV

ILOAD = 100mA/DIV

100µs/DIV

VIN = VOUT = 5V

ILOAD = 0 TO 300mA

COUT = 22µF

X5R CERAMIC

3534 G18

Burst Mode Operation VOUT

Ripple at 25mA Load

VOUT = 50mV/DIV

INDUCTOR CURRENT

= 200mA/DIV

VIN = VOUT = 5V

COUT = 22µF

X5R CERAMIC

10µs/DIV

3534 G19

Transition from Burst Mode

Operation to Fixed Frequency

Mode

VOUT = 50mV/DIV

PWM = 2V/DIV

VIN = VOUT = 5V

ILOAD = 25mA

COUT = 22µF

X5R CERAMIC

100µs/DIV

3534 G20

VOUT Start-Up

VOUT = 2V/DIV

RUN/SS = 1V/DIV

(STARTS AT 1V)

INDUCTOR CURRENT =

500mA/DIV PWM OPERATION MUST BE COMMANDED

500µs/DIV

3534 G21

ILOAD = 100mA

3534fb

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For more information www.linear.com/LTC3534

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